( )抹灰面积按其长度乘以高度计算。
A．外墙
B．外墙裙
C．内墙
D．有墙裙的内墙
参考答案：B
B．两极对峙的政治格局
C．美国的霸权主义政策
D．世界政治格局多极化趋势
I don’t know the reason _______ you were absent from the meeting, and I am not sure that someone will tell me the reason _______ you haven’t told me.
A．why; that
B．that; why
C．because; why
D．of which; that
